宜万铁路云雾山岩溶隧道超前钻孔注浆封堵技术

On advance borehole grouting and blocking technique at Yunwushan karst tunnel along Yichang-Wanzhou railway

针对宜万铁路云雾山隧道的工程特点,研究了该隧道超前钻孔注浆封堵技术,介绍了具体的施工准备工作,主要从封堵工艺、浆液配比、注浆压力三方面阐述了钻孔注浆封堵施工技术措施,并给出了一些施工建议,以供参考。

According to the engineering features of Yunwushan tunnel along Yichang-Wanzhou railway, the paper researches its advance borehole grouting and blocking technique, introduces the construction preparation, illustrates the measures for the advance borehole grouting and blocking technique from the blocking craft, size proportion, and grouting pressure, and provides some construction suggestions, so as to provide some reference.